My sister met him at the Grand Theater yesterday afternoon, so he ＿＿＿＿ your lecture．
| A．couldn't have attended | B．needn't have attended |
| C．mustn't have attended | D．shouldn't have attended |
Tom, look at your shirt! It requires ________.
| A．washing | B．washed | C．to wash | D．being washed |
I am concerned ____ it that I can’t concentrate ____ my work because of headache.
| A．of; on | B．of; of | C．about; on | D．about; to |
_____of danger in the street at night, she had to go home, with a friend_____ her.
| A．Warned; accompanied | B．Warning; accompanying |
| C．Having warned; accompanied | D．Having been warned; accompanying |
—Jack is very clever and he studies hard as well.
—It’s no ______ he always comes out first in the exams.
| A．doubt | B．need | C．wonder | D．problem |
Autumn coming, down ________.
| A．do the leaves fall | B．the leaves will fall |
| C．fall the leaves | D．the leaves are falling |